package Chapter8_polymorphism;

/**
 * Date: 2019/2/19
 * Time: 17:02
 * User: Driss.
 */

class Instrument3 {
    void play(Note n){ System.out.print("Instrument.play()"); }
    String what(){return "Instrument";}
    void adjust(){
        System.out.println("Adjusting Instument");
    }
}


public class Music3 {
}
